Transparent display cover



Feb. 10,, 3931 L. G. NELSON 1,791,519

TRANSPARENT DISPLAY COVER Filed May 10', 1928 .i'atented l d, fi s-ll LEIGH NELSON, OF CHICAGO, ILLINOZS TEANSEARENT. DESELAY COVER Application filed May 10,

This invention relates to display covers for containers r food stuff, as, for instance, evaporated fruit, candies, etc, and aims to provide practical and efficient cover which may be readily and conveniently placed upon a container permitting ready access to the same and a view of the contents thereof, at the same time protecting the contents.

'lhe covers of the above type which have been used heretofore, have usually been of glass, have been comparatively ertoensive to anu cture have not been constructed to withstand rough usage.

order to overcome these diiiiculties and to provide a more ellicien cover of the above type, I provide a cover which is constructed of relatively thin flexible material, such as celluloid, for clearness and lightness without frangibility.

'lhe cover may be of relatively thin mateafford suitable rigidity, because rial and stir connection therewith I provide a relatively rigid lightweight frame preferably of relatively thin metallic material, such as aluminum or steel. The construction of this frame for marginally holding the thin flexible sheet and for positioning and holding the cover upon a container, is one of the features of the present invention. lVhen it is deemed desirable, the frame is formed of a plurality of sections, and the manner of joining these sections is another feature of the present invention. Another feature resides in the manner of securing a thin flexible sheet marginally in the frame and against being pulled or drawn out of the frame along its margin by pressure upon the flexible sheet within the area bounded by the frame. Another object is to permit relative contraction and expansion between the frame and the margin of the thin flexible sheet without buckling or tearin g the thin flexible sheet.

()ther advantages and features of my invention will be apparent from the specification and claims when taken in conjunction 4 ie accompanying drawings, wherein 1 represents a plan view of a cover lying this invention;

Fig. 2 is perspective View of a corner of said cover;

1328. Serial lilo. 278,526.

members showing the construction of the respective ends thereof.

Referring to the drawings more particularly, numeral l represents the frame members which are arranged in the manner shown to make a frame adapted to enclose her in U thin flexible material 2, such as celluloid. humeral 9 indicates the side wall of the container upon w ich the cover herein referred to is placed.

in construction, the frame members are preferably bent from flat strips of thin, light durable material, such aluminum steel; these m mbers have the one end a tongue 3 projecting over the approxi upper onethird of the flat s 'ips and at theother end atongue 4 projecting over the approximate central one-third of flat strips and a tilt tongue 5 projecting over the approximate lower one-third of said flat strips. ch tongue bears a hole or holoso adapted to receive ets 6 or 7. The members are passed through a punch press or other siin r machine and he appromma-te upper onethird of the strip is bent iorward toward and nearly upon the approximate central onethird of the strip to form, a groove, and the approximate low r one-third is bent backward to form a right angle with said approximate central one-third of said strip.

The transparent material is then inserted into the said groove of one member formed by the bending of the 1 rmost part of the strip nearly upon the central part, the edge of said material being placed as far into the groove as possible and the corner of saiu material permitted to extend to the edge of the projecting tongue or torques. The opposite end of another frame member is then placed at an angle upon or under, whichever eh may be, the projecting tongue of the 11 her containing the transparent material .nd the material placed within the groove of the loo placing of the members in El e manner described is then placed a machine designed to rivet or otherwise secure two members and the corner of the transparen material together. The other me" i then consecutively placed and 1 otherwise seeur id, to the members the transparent materia.-. the scribed as to form a complete may be either square, recto other shape, depending; uprn the members used. The to que over 111 on the adjacent si frame member and then i or secured in another coin It is to be no ed that terial enclosed the either held securely b sides of the enclo rivet 6, or by hendin together to sucl loosely holdi ready cxpan. straining or brealc' ral.

Another modifica ion of t construction consists in making: t l c r the corners of the tra isparent iiatcria rrough which the rivets placed larger in is than the rivets or other securing means-i a the corners tightly enough to securely hold the material, allowing enough space between the riveted ember so as permit movement of the n'iaterial held thereby in the event of contraction or expansion due to the elements. I consider this feature of great importance from a practical s endpoint, as the rate of expansion and contraction of celluloid under temperature changes is dinereat from that of aluminum or other metal, and th refore it is desirable to allow for this dineronce, as otherwise the celluloid would buckle and eventually break and tear, due to un even expansion and C(illtlhCLiOll.

lVbile I have illus'rated :nd described the preferred form of the devre, changes can be resorted to without departing from the field and scope of the invention, and I intend to include in this application all such variations as fall within the scope of the apnendeo claims.

I am aware that man changes may be made without departing from the principles of this invention, and .l do not wish to be limited to the details shown or described.

I claim 1. A disp ay cover comprising a transparent sheet, a plurality of relatively thin metallic frame members folded over the margin of the sheet, one frame member having an end extension on one side of the fold overlapping an end extension on the opposite side of the fold of the adjacent frame member, and means passing through said overlapping e:: tension and through the margin of the translll v i dun parent sheet for securing said frame members together and the margin of the sheet therein.

A display cover comprising a thin flexible ransparent sheet, a frame member folded over the margin of said sheet, asecond frame member folded over the nargin of the sheet, overlapping; extensions on said frame member, and means passing through said extensio: s and through the margin of the sheet in. securing aid sheet to said frame members and said frame members together.

1r displa cover comprising),- a thin flexible transparent sheet. f ame members adaptthe roar nal cc gres of said sheet, ends of the frame e I 1 means engaging the i: inain inal ena'e of the sheet to hold it ay cover comprising; a thin flex:- transparent sheet, frame members adapted to receive the edges of said flexible sheet, and having langes adapted to fit within a 'aine c ecuringr the ends together and engagsheet to hold it therein t. e frame, said openii being on ermi relative expansion and con on of the margin of the sheet without 7 n; or buckling. same.

In witness whereof, I hereunto subscribe my name this 2nd day of May, 1928.

LEIGH G. NELSON. 

